Gaahh this took so long!
And I think it could have been better, although I don't know how.
These two blood-frenzied ponies are characters appearing in the Pony War Chronicles fan fiction, written by a friend of mine.
It's absolutely wonderful, there are no words on how to explain it well.
They are Flesh (standing pegasus) and Polished Drill (unicorn). Both of them fight for the Night-Ops, a batallion of scouts and special forces battling under the Lunar standard.
And also featured on Equestria Daily.
Ohmygoshohmygoshohmygosh I'm so proud!!